211.51.0.0/16

AS4766 · Korea Telecom

Need more data or want to access it via API or data downloads? Sign up to get free access

Summary

Country	South Korea
Domain	kt.com
ASN	AS4766
Registry	KRNIC
ID	KORNET-KR

WHOIS Details

inetnum:        211.51.0.0 - 211.51.255.255
netname:        KORNET-KR
descr:          Korea Telecom
country:        KR
admin-c:        IA9-KR
tech-c:         IM9-KR
status:         ALLOCATED PORTABLE
mnt-by:         MNT-KRNIC-AP
mnt-irt:        IRT-KRNIC-KR
changed:        [email protected] 20240912
remarks:        This information has been partially mirrored by APNIC from
remarks:        KRNIC. To obtain more specific information, please use the
remarks:        KRNIC whois server at whois.kisa.or.kr.
source:         KRNIC


person:         IP Manager
address:        Gyeonggi-do Bundang-gu, Seongnam-si Buljeong-ro 90
address:        KT Head Office
country:        KR
phone:          +82-2-500-6630
e-mail:         [email protected]
nic-hdl:        IA9-KR
mnt-by:         MNT-KRNIC-AP
changed:        [email protected] 20240912
remarks:        This information has been partially mirrored by APNIC from
remarks:        KRNIC. To obtain more specific information, please use the
remarks:        KRNIC whois server at whois.kisa.or.kr.
source:         KRNIC

person:         IP Manager
address:        Gyeonggi-do Bundang-gu, Seongnam-si Buljeong-ro 90
address:        KT Head Office
country:        KR
phone:          +82-2-500-6630
e-mail:         [email protected]
nic-hdl:        IM9-KR
mnt-by:         MNT-KRNIC-AP
changed:        [email protected] 20240912
remarks:        This information has been partially mirrored by APNIC from
remarks:        KRNIC. To obtain more specific information, please use the
remarks:        KRNIC whois server at whois.kisa.or.kr.
source:         KRNIC

Nearby Ranges

BGP prefixes that overlap with 211.0.0.0/8

Range	ASN	Company	Num of IPs
211.136.0.0/13	AS9808	China Mobile Communications Corporation	524,288
211.216.0.0/13	AS152214	Korea Telecom	524,288
211.216.0.0/13	AS4961	Korea Telecom	524,288
211.216.0.0/13	AS9318	Korea Telecom	524,288
211.216.0.0/13	AS38089	Korea Telecom	524,288
211.216.0.0/13	AS17859	Korea Telecom	524,288
211.136.0.0/13	AS56046	China Mobile Communications Corporation	524,288
211.216.0.0/13	AS4766	Korea Telecom	524,288
211.212.0.0/14	AS9318	SK Broadband Co Ltd	262,144
211.28.0.0/14	AS4804	OPTUS INTERNET - RETAIL	262,144
211.208.0.0/14	AS9318	SK Broadband Co Ltd	262,144
211.8.0.0/16	AS4725	SoftBank Corp.	65,536
211.32.0.0/16	AS9699	LG DACOM Corporation	65,536
211.146.0.0/16	AS4847	China Network Information Center	65,536
211.183.0.0/16	AS17875	DREAMLINE CO.	65,536
211.53.0.0/16	AS23601	LG DACOM Corporation	65,536
211.151.0.0/16	AS9308	21ViaNet(China),Inc.	65,536
211.40.0.0/16	AS23601	LG DACOM Corporation	65,536
211.131.0.0/16	AS4725	SoftBank Corp.	65,536
211.169.0.0/16	AS38661	DACOM Corp.	65,536
211.3.0.0/16	AS4725	SoftBank Corp.	65,536
211.151.0.0/16	AS9308	21ViaNet(China),Inc.	65,536
211.182.0.0/16	AS9706	BUSAN EDUCATION RESEARCH & INFORMATION INSTITUTE	65,536
211.186.0.0/16	AS9318	SK Broadband Co Ltd	65,536
211.158.0.0/16	AS4837	CHONGQING CNC BROADBAND NETWORKS CO.,LTD	65,536
211.48.0.0/16	AS9868	Korea Telecom	65,536
211.59.0.0/16	AS9318	SK Broadband Co Ltd	65,536
211.58.0.0/16	AS9318	SK Broadband Co Ltd	65,536
211.169.0.0/16	AS9526	DACOM Corp.	65,536
211.129.0.0/16	AS4713	NTT DOCOMO BUSINESS,Inc.	65,536
211.127.0.0/16	AS4725	SoftBank Corp.	65,536
211.48.0.0/16	AS17615	Korea Telecom	65,536
211.243.0.0/16	AS9318	SK Broadband Co Ltd	65,536
211.0.0.0/16	AS4713	NTT DOCOMO BUSINESS,Inc.	65,536
211.11.0.0/16	AS4713	NTT DOCOMO BUSINESS,Inc.	65,536
211.244.0.0/16	AS9318	SK Broadband Co Ltd	65,536
211.32.0.0/16	AS23601	LG DACOM Corporation	65,536
211.121.0.0/16	AS4725	SoftBank Corp.	65,536
211.6.0.0/16	AS4713	NTT DOCOMO BUSINESS,Inc.	65,536
211.171.0.0/16	AS9641	DACOM Corp.	65,536
211.32.0.0/16	AS9967	LG DACOM Corporation	65,536
211.50.0.0/16	AS23601	LG DACOM Corporation	65,536
211.151.0.0/16	AS9802	21ViaNet(China),Inc.	65,536
211.169.0.0/16	AS3786	DACOM Corp.	65,536
211.20.0.0/16	AS3462	Data Communication Business Group,	65,536
211.32.0.0/16	AS3786	LG DACOM Corporation	65,536
211.27.0.0/16	AS9443	Vocus Australia	65,536
211.40.0.0/16	AS9319	LG DACOM Corporation	65,536
211.124.0.0/16	AS9617	JCOM Co., Ltd.	65,536

Hosted domains

There are 1,331 domain names hosted across 122 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
211.51.221.167	namkyungst.kr	155
211.51.221.206	airpassmall.com	147
211.51.221.166	5000call.net	125
211.51.221.208	keti-dcemc.kr	114
211.51.221.164	daehantech.kr	103
211.51.221.165	booyoung.biz	65
211.51.221.197	djtimber.co.kr	60
211.51.221.205	songhabank.com	54
211.51.221.187	carbontech.kr	47
211.51.221.190	globalplanters.org	33
211.51.221.191	1899-2443.com	27
211.51.221.218	mdsarang.com	25
211.51.221.170	youngpension.com	21
211.51.221.181	geobongfiber.co.kr	20
211.51.221.194	ekkorea.co.kr	17
211.51.221.146	gadgethosp.co.kr	16
211.51.221.189	yscorian.co.kr	16
211.51.221.192	jo1.co.kr	15
211.51.221.183	jjlogis.kr	14
211.51.221.186	acegd.co.kr	14

Hosted domains API

Our Hosted Domains API, or Reverse IP API returns a full list of domains that are hosted on a single IP address.

Useful for Cybersecurity

Read more

Pingable IPs

28,034 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
211.51.219.162	AS4766 Korea Telecom	`5.46ms` from Seoul, KR
211.51.214.68	AS4766 Korea Telecom	`5.38ms` from Seoul, KR
211.51.127.183	AS4766 Korea Telecom	`1.50ms` from Seoul, KR
211.51.91.160	AS4766 Korea Telecom	`1.95ms` from Seoul, KR
211.51.63.215	AS4766 Korea Telecom	`1.02ms` from Seoul, KR
211.51.184.108	AS4766 Korea Telecom	`6.49ms` from Seoul, KR
211.51.202.231	AS4766 Korea Telecom	`3.44ms` from Seoul, KR
211.51.182.41	AS4766 Korea Telecom	`6.80ms` from Seoul, KR
211.51.173.194	AS4766 Korea Telecom	`4.81ms` from Seoul, KR
211.51.170.203	AS4766 Korea Telecom	`4.51ms` from Seoul, KR
211.51.22.70	AS4766 Korea Telecom	`1.53ms` from Seoul, KR
211.51.193.46	AS4766 Korea Telecom	`1.07ms` from Seoul, KR
211.51.3.94	AS4766 Korea Telecom	`1.52ms` from Seoul, KR
211.51.87.88	AS4766 Korea Telecom	`1.31ms` from Seoul, KR
211.51.121.78	AS4766 Korea Telecom	`1.62ms` from Seoul, KR
211.51.208.129	AS4766 Korea Telecom	`3.62ms` from Seoul, KR
211.51.232.65	AS4766 Korea Telecom	`1.11ms` from Seoul, KR
211.51.141.129	AS4766 Korea Telecom	`7.50ms` from Seoul, KR
211.51.187.249	AS4766 Korea Telecom	`5.92ms` from Seoul, KR
211.51.30.230	AS4766 Korea Telecom	`1.14ms` from Seoul, KR
211.51.105.120	AS4766 Korea Telecom	`1.70ms` from Seoul, KR
211.51.107.106	AS4766 Korea Telecom	`2.05ms` from Seoul, KR
211.51.238.126	AS4766 Korea Telecom	`3.23ms` from Seoul, KR
211.51.168.75	AS4766 Korea Telecom	`4.85ms` from Seoul, KR
211.51.27.161	AS4766 Korea Telecom	`1.33ms` from Seoul, KR

Other Pingable IPs

Below is a random selection of 25 IPs that replied to an ICMP ping during our most recent internet scan.

IP Address	ASN	Details
20.172.150.16	AS8075 Microsoft Corporation	`0.54ms` from Ashburn, US
94.20.140.64	AS213881 OUR Technology LLC	`0.36ms` from Baku, AZ
35.89.37.192	AS16509 Amazon.com, Inc.	`0.24ms` from Boardman, US
186.235.85.32	AS263097 VN INFRAESTRUTURA DE REDES LTDA.	`0.31ms` from Brasilia, BR
54.78.52.144	AS16509 Amazon.com, Inc.	`0.17ms` from Dublin, IE
39.173.61.160	AS56041 China Mobile communications corporation	`6.26ms` from Hangzhou, CN
75.194.233.96	AS6167 Verizon Business	`9.93ms` from Herndon, US
68.110.59.176	AS394505 CityCenter Land, LLC	`7.30ms` from Los Angeles, US
67.240.11.0	AS11351 Charter Communications Inc	`12.04ms` from New York City, US
84.145.179.240	AS3320 Deutsche Telekom AG	`5.15ms` from Nuernberg, DE
61.78.245.224	AS4766 Korea Telecom	`9.52ms` from Seoul, KR
20.210.31.112	AS8075 Microsoft Corporation	`0.16ms` from Tokyo, JP
204.205.148.96	AS7421 Sprint	`0.12ms` from Ashburn, US
73.154.21.240	AS7922 Comcast Cable Communications, LLC	`9.92ms` from Ashburn, US
89.120.189.0	AS9050 Orange Romania S.A.	`0.28ms` from Bucharest, RO
156.211.160.176	AS8452 TE-AS	`7.29ms` from Cairo, EG
174.110.40.144	AS11426 Charter Communications Inc	`8.99ms` from Charlotte, US
3.142.106.32	AS16509 Amazon.com, Inc.	`0.19ms` from Columbus, US
75.65.93.80	AS7922 Comcast Cable Communications, LLC	`19.64ms` from Dallas, US
18.202.182.176	AS16509 Amazon.com, Inc.	`0.17ms` from Dublin, IE
217.251.115.80	AS3320 Deutsche Telekom AG	`4.78ms` from Duesseldorf, DE
144.125.14.240	AS394089 Google LLC	`0.94ms` from Frankfurt am Main, DE
204.90.18.16	AS8103 Florida Department of Management Services - Division of Telecommunications	`5.96ms` from Jacksonville, US
109.158.209.192	AS2856 British Telecommunications PLC	`4.68ms` from London, GB
86.22.127.48	AS5089 Virgin Media Limited	`8.30ms` from London, GB

Traceroute

Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this range. Learn more.

traceroute -a -n -q1 211.51.235.174

traceroute to 211.51.235.174 (211.51.235.174): 64 hops max, 52 byte packets

1 [AS15169] 74.125.37.114 154.655 ms

2 *

3 [AS4766] 112.174.84.117 186.577 ms

4 *

5 *

6 *

7 [AS4766] 211.51.235.174 193.272 ms

Measurement taken from

IPinfo ProbeNet in Moncks Corner, US

On December 6th 2025

What are IP address ranges?

IP address ranges, or netblocks, are groups of related IP addresses. They are usually represented as a base IP address, followed by a slash, and then a netmask which represents how many IP addresses are contained within the netblock. This format is known as CIDR. You'll also sometimes see netblocks given as a start ip address, and an end ip address, or an ip address range.

Traffic works its way around the internet based on the routing table, which contains a list of networks and their associated netblocks.

An API built with users in mind: reliable, accurate, and easy-to-use

Discover why industry-leading companies around the globe love our data. IPinfo's accurate insights fuel use cases from cybersecurity, data enrichment, web personalization, and much more.

Get Started for Free Contact Sales